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Intake systems for internal combustion engines

A technology of intake system and internal combustion engine, which is applied in the field of intake system and can solve problems such as the difference in cooling effect of EGR gas

Inactive Publication Date: 2015-11-04
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there are differences in the cooling effect of the internal EGR gas between the cylinders of the internal combustion engine

Method used

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  • Intake systems for internal combustion engines
  • Intake systems for internal combustion engines
  • Intake systems for internal combustion engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Embodiments will be described in detail below with reference to the accompanying drawings.

[0020] The configuration of an intake system for an internal combustion engine according to an embodiment will be described.

[0021] Figure 1 to Figure 5 An intake system for an internal combustion engine of an embodiment is shown.

[0022] The control unit (internal combustion engine control system) for the internal combustion engine of this embodiment includes: a supercharging system having a turbocharger (supercharger) that supercharges the intake air passing through the air filter using the pressure of the exhaust gas from the internal combustion engine (compression or pressurization); and an internal EGR system, which opens the intake valve during the exhaust stroke of the internal combustion engine so that a portion of the exhaust gas (internal EGR gas) is recirculated into the intake passage. The control unit of the internal combustion engine is used as the intake air...

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PUM

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Abstract

An intake system for an engine includes an intake manifold having a surge tank room and branch passages, and a water-cooling type cooler having a first cooling unit and second cooling units. The surge tank room is disposed on a downstream side of a supercharger in a flow direction of intake air. Supercharged intake air flowing into the surge tank room is distributed among intake ports respectively through the branch passages. The first cooling unit is inserted in the surge tank room, and cools supercharged intake air which has flowed into the intake manifold through heat exchange between supercharged intake air and coolant flowing in the first cooling unit. The second cooling units are inserted respectively in the intake ports, and cool internal EGR gas, which has been recirculated into their corresponding intake ports, through heat exchange between internal EGR gas and coolant flowing in the second cooling units.

Description

technical field [0001] The present invention relates to an intake system for an internal combustion engine in which a water-cooled type cooler is accommodated in each intake port of the internal combustion engine and in a buffer chamber of an intake manifold. Background technique [0002] Conventional techniques will be described below. [0003] Conventionally, in an internal combustion engine including a supercharger that feeds supercharged intake air into cylinders (hereinafter also referred to as a supercharged internal combustion engine), the temperature of the intake air is raised by being compressed therethrough by the supercharger. When the temperature of the intake air rises, in addition to the deterioration of the filling efficiency of the intake air relative to the internal combustion engine, knocking is likely to occur when the internal combustion engine is under high load. As a countermeasure, an intercooler for cooling the supercharged intake air that has been ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B29/04F02M25/07F02M35/104
CPCF01P3/00F01P2060/02F01P2060/16F02B29/0462F02M25/0737F02M35/10032F02M35/10222F02M35/10268F02M35/116Y02T10/121Y02T10/146F02M26/32Y02T10/12
Inventor 杉浦佳彦井野正夫神谷定行
Owner DENSO CORP